| Title |
A Study on Estimating Recycling Potential of Demolition Waste Generated in End-of-Life of Buildings by Structural Type Considering Economic Efficiency |
| Authors |
Cha, Gi-Wook ; Kim, Jin Ho ; Moon, Hyeun Jun ; Kim, Young-Chan ; Hong, Won-Hwa |
| DOI |
https://doi.org/10.5659/JAIK_SC.2020.36.4.153 |
| Keywords |
C&D Waste Generation; Demolition Waste; Economic Benefit; Recycling Potential; Life Cycle Assessment |
| Abstract |
This study investigates the recycling potential of demolition waste (DW) according to building structure, while considering economic aspects.
For that, this study surveyed 1,034 residential buildings to collect reliable information on demolition waste generation rates (DWGRs). This
study suggested a method for operational cost calculation for each stage and carried out an inventory analysis. The economic value of
recycled DW materials was also calculated. And then, the recycling potential(RP) was calculated by building structures and waste types. RP
by building structure was low (27-40%), and RP was found in the order of masonry-block, wooden, RC and concrete-brick. By type of
DWs, the RP of aggregates was considerably lower than 7%, and DWs such as wood, plastics, and metals showed more than 100% RP.
Considering the results of this study, In order to improve the RP of buildings and DWs, the diversification of products that recycled waste
like aggregates (i.e., mortar, concrete, bricks, blocks, tiles) and the development of high value-added products are considered to be the most
urgent problems. Based on the above RP results, this study proposed a more advanced method for life cycle assessment of buildings and
demolition waste. |